Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

Hazardous Weather Conditions

Air Quality Alert

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

74°F

23°C

Humidity	91%
Wind Speed	N 3 mph
Barometer	29.96 in (1014.2 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	13 Aug 4:53 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Princeton TX

Overnight
Low: 74 °F
Chance
T-storms
Wednesday
High: 92 °F
Chance
T-storms
Wednesday Night
Low: 75 °F
Mostly Clear
Thursday
High: 94 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 77 °F
Mostly Clear
Friday
High: 96 °F
Sunny
Friday Night
Low: 78 °F
Mostly Clear
Saturday
High: 96 °F
Sunny
Saturday Night
Low: 77 °F
Mostly Clear

Detailed Forecast

Overnight

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Calm wind.

Wednesday

A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly sunny, with a high near 92. Heat index values as high as 103. Calm wind becoming south southeast around 5 mph in the afternoon.

Wednesday Night

Mostly clear, with a low around 75. South southeast wind around 5 mph becoming calm.

Thursday

A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Heat index values as high as 107. Calm wind becoming south southeast around 5 mph in the morning.

Thursday Night

Mostly clear, with a low around 77. South southeast wind around 5 mph.

Friday

Sunny, with a high near 96. South wind 5 to 10 mph.

Friday Night

Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.

Saturday

Sunny, with a high near 96. South wind 5 to 10 mph.

Saturday Night

Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

Sunday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.